Sand and stone screening anti-blocking device

Abstract

The utility model discloses a gravel screening anti-blocking device which comprises a machine frame, a vibration assembly is installed at the top of the machine frame, a shell is installed at the top of the vibration assembly, two rollers are symmetrically and rotationally connected between the inner walls of the two sides of the shell, and a metal screen is jointly connected between the two rollers in a sleeved mode. And the outer surface of the metal screen is attached to the inner wall of the shell, and a gear motor is fixedly installed on one side of the outer surface of the shell. By means of the shell, the roller, the speed reduction motor, the metal screen, the mounting base, the discharging groove, the mounting plate, the ejector pins and the reciprocating lifting assembly, the conveyor belt type design is adopted as a whole, the metal screen is driven to move periodically and intermittently, then stones blocked in meshes are ejected out through the ejector pins, large-area blocking of the metal screen is avoided, and the service life of the screen is prolonged. And the amount of sand which is not screened out and is discharged together with stones is reduced, and the screening effect on the stones is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of screening, in particular to a sand and stone screening anti-blocking device. Background Art

[0002] Screening is the process of using a sieve to allow fine particles smaller than the sieve holes to pass through the sieve surface, while coarse particles larger than the sieve holes are retained on the sieve surface, thereby completing the process of separating coarse and fine materials. In the process of house construction, sand and stone screening is very important. By screening the sand, impurities and stones can be removed, the quality and purity of the sand can be improved, and the service life and safety of the house can be ensured.

[0003] The screen used in the existing sand and gravel screening device is a flat metal mesh. When the sand and gravel are vibrated and screened, the stones mixed in the sand are likely to clog the mesh of the metal mesh during the screening process. As time goes by, the clogging area will gradually increase, causing some sand to not be screened out and be discharged together with the stones, reducing the screening effect of the sand. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a sand and stone screening anti-blocking device.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a sand and stone screening and anti-blocking device comprises a frame, a vibration component is installed on the top of the frame, a shell is installed on the top of the vibration component, two rollers are symmetrically rotatably connected between the inner walls on both sides of the shell, a metal screen is commonly sleeved between the two rollers, and the outer surface of the metal screen is in contact with the inner wall of the shell, a reduction motor is fixedly installed on one side of the outer surface of the shell, and the driving shaft of the reduction motor passes through the outer wall of the shell and is fixedly connected to adjacent rollers; a mounting seat is commonly fixedly connected to the inner walls on both sides of the shell, a reciprocating lifting component is installed on the inner side of the mounting seat, the movable end of the reciprocating lifting component is fixedly connected to a mounting plate, and a plurality of staggered ejectors are fixedly connected to the bottom of the mounting plate; two brackets are symmetrically fixedly connected to the top of the frame, a discharging trough is commonly fixedly connected to the top of the two brackets, and the discharging trough is arranged through the shell.

[0006] Furthermore, the vibration assembly includes four vibration screen springs, and the vibration screen springs are symmetrically fixedly installed on the top of the frame. The four vibration screen springs are fixedly connected to the shell. The vibration screen springs can bear the gravity of the shell, which is beneficial to the installation of the shell.

[0007] Furthermore, the vibration component also includes a mounting frame, and the mounting frame is fixedly mounted on one side of the outer surface of the frame, a driving motor is fixedly mounted on the top of the mounting frame, a driving end of the driving motor is fixedly connected to a rotating shaft, and the rotating shaft passes through the outer wall of one side of the frame and extends to the other side and is rotatably connected thereto, two first cams are symmetrically fixedly sleeved on the outer surface of the rotating shaft, and the first cams are in contact with the shell, which can drive the shell to reciprocate up and down, thereby achieving an up and down vibration effect.

[0008] Furthermore, the reciprocating lifting assembly includes a power motor, and the power motor is fixedly mounted on one side of the outer surface of the mounting seat. The driving shaft of the power motor passes through the outer wall of the mounting seat and is fixedly connected to a second cam. The bottom of the second cam abuts against a movable bar, and the movable bar is slidably connected to the mounting seat and fixedly connected to the mounting plate. A plurality of return springs are fixedly connected between the movable bar and the mounting seat, which can drive the movable bar to reciprocate, thereby driving the mounting plate and the ejector pin to reciprocate up and down.

[0009] Furthermore, two retaining bars are provided above the discharging chute, and the retaining bars are fitted with the metal screen and the drum. The provision of the retaining bars is conducive to the sand falling into the discharging chute, and prevents the screened sand from falling into the shell.

[0010] Furthermore, a through hole is provided on one side of the outer surface of the shell, and the through hole matches the discharge chute, and the provision of the through hole is conducive to the installation of the discharge chute.

[0011] Furthermore, the inner walls on both sides of the frame are fixedly connected with a discharge trough, and the discharge trough is used to receive stones, which is conducive to the discharge of stones.

[0012] Beneficial effects of the utility model:

[0013] When the utility model is in use, the sand and stone screening and anti-blocking device adopts a conveyor belt design through the shell, roller, reduction motor, metal screen, mounting seat, discharge chute, mounting plate, ejector pin and reciprocating lifting assembly. The metal screen is driven to move intermittently at regular intervals, and then the stones blocked in the mesh are ejected by the ejector pin, so as to avoid large-area blockage of the metal screen, reduce the amount of sand that is not screened out and is discharged together with the stones, and improve the screening effect of sand and stone. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the specific implementation methods will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 : A three-dimensional diagram of the utility model;

[0016] Figure 2 : A cross-sectional view of the utility model;

[0017] Figure 3 :The utility model Figure 2 Enlarged view of point A in the middle.

[0018] The reference numerals are as follows:

[0019] 1. Frame; 2. Vibrating screen spring; 3. Bracket; 4. Mounting frame; 5. Driving motor; 6. Housing; 7. Speed ​​reduction motor; 8. Metal screen; 9. Discharge chute; 10. Discharge chute; 11. Stop bar; 12. Roller; 13. First cam; 14. Rotating shaft; 15. Through hole; 16. Reset spring; 17. Mounting seat; 18. Mounting plate; 19. Ejector pin; 20. Second cam; 21. Power motor; 22. Movable bar. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figures 1 to 3 As shown, it relates to a sand and stone screening anti-blocking device, including a frame 1, a vibration component is installed on the top of the frame 1, a shell 6 is installed on the top of the vibration component, the vibration component includes four vibrating screen springs 2, and the vibrating screen springs 2 are symmetrically fixedly installed on the top of the frame 1, and the four vibrating screen springs 2 are fixedly connected to the shell 6. The vibration component also includes a mounting frame 4, and the mounting frame 4 is fixedly installed on one side of the outer surface of the frame 1, and a driving motor 5 is fixedly installed on the top of the mounting frame 4. The driving end of the driving motor 5 is fixedly connected with a rotating shaft 14, and the rotating shaft 14 extends through the outer wall of one side of the frame 1 to the other side and is rotatably connected thereto. Two first cams 13 are symmetrically fixedly sleeved on the outer surface of the rotating shaft 14, and the first cams 13 are abutted against the shell 6. The driving motor 5 drives the rotating shaft 14 to rotate, and the rotating shaft 14 drives the two first cams 13 to rotate. The first cam 13 cooperates with the vibrating screen spring 2 to realize the vibration of the shell 6.

[0022] Two rollers 12 are symmetrically rotatably connected between the inner walls on both sides of the shell 6, a metal screen 8 is commonly sleeved between the two rollers 12, and the outer surface of the metal screen 8 is in contact with the inner wall of the shell 6. A reduction motor 7 is fixedly installed on one side of the outer surface of the shell 6, and the driving shaft of the reduction motor 7 passes through the outer wall of the shell 6 and is fixedly connected to the adjacent rollers 12. The reduction motor 7 drives the rollers 12 connected thereto to rotate, and the two rollers 12 cooperate with each other to drive the metal screen 8 to move.

[0023] The inner walls on both sides of the shell 6 are fixedly connected with a mounting seat 17, a reciprocating lifting assembly is installed inside the mounting seat 17, the movable end of the reciprocating lifting assembly is fixedly connected with a mounting plate 18, and the bottom of the mounting plate 18 is fixedly connected with a plurality of offset ejector pins 19, the reciprocating lifting assembly includes a power motor 21, and the power motor 21 is fixedly installed on one side of the outer surface of the mounting seat 17, the driving shaft of the power motor 21 passes through the outer wall of the mounting seat 17 and is fixedly connected with a second cam 20, the bottom of the second cam 20 is abutted with an active bar 22, and the active bar 22 is connected to the The mounting seats 17 are slidably connected and fixedly connected to the mounting plate 18. A plurality of return springs 16 are fixedly connected between the movable bar 22 and the mounting seat 17. The power motor 21 drives the second cam 20 to rotate. When the outer diameter of the contact surface between the second cam 20 and the movable bar 22 changes from large to small, the return spring 16 drives the movable bar 22 to rise, thereby driving the mounting plate 18 and the ejector pin 19 to rise. When the outer diameter of the contact surface between the second cam 20 and the movable bar 22 changes from small to large, the movable bar 22 is pushed down, thereby driving the mounting plate 18 and the ejector pin 19 to fall.

[0024] Two brackets 3 are symmetrically fixedly connected to the top of the frame 1, and a discharge trough 9 is fixedly connected to the top of the two brackets 3, and the discharge trough 9 is arranged through the shell 6. Two retaining bars 11 are arranged above the discharge trough 9, and the retaining bars 11 are fitted with the metal screen 8 and the drum 12. A through hole 15 is opened on one side of the outer surface of the shell 6, and the through hole 15 is matched with the discharge trough 9. The setting of the discharge trough 9 is conducive to the discharge of the screened sand.

[0025] The inner walls on both sides of the frame 1 are fixedly connected with a discharge trough 10, which is used to receive stones and is conducive to the discharge of stones at the screening location.

[0026] Working principle: First, the driving motor 5 is started, and the driving motor 5 drives the rotating shaft 14 to rotate, and the rotating shaft 14 drives the two first cams 13 to rotate. The first cam 13 cooperates with the vibrating screen spring 2 to realize the vibration of the shell 6, thereby driving the metal screen 8 to vibrate through various components, and then continuously putting sand and stones on the metal screen 8. After a period of time, the reduction motor 7 intermittently drives the roller 12 connected to it to rotate, and the two rollers 12 cooperate to drive the metal screen 8 to move in the gap. At this time, the power motor 21 is running, and the power motor 21 drives the second cam 20 to rotate. When the outer diameter of the contact surface between the second cam 20 and the movable bar 22 changes from small to large, the movable bar 22 is pushed down, thereby driving the mounting plate 18 and the ejector pin 19 to decrease. When the ejector pin 19 is inserted into the metal screen 8, the stuck stones can be ejected. When the outer diameter of the contact surface between the second cam 20 and the movable bar 22 changes from large to small, the reset spring 16 drives the movable bar 22 to rise, thereby driving the mounting plate 18 and the ejector pin 19 to rise until the cleaning is completed.

[0027] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A sand and stone screening anti-blocking device, comprising a frame (1), characterized in that: A vibration assembly is installed on the top of the frame (1), and a shell (6) is installed on the top of the vibration assembly. Two rollers (12) are symmetrically rotatably connected between the inner walls on both sides of the shell (6), a metal screen (8) is commonly sleeved between the two rollers (12), and the outer surface of the metal screen (8) is in contact with the inner wall of the shell (6). A reduction motor (7) is fixedly installed on one side of the outer surface of the shell (6), and the drive shaft of the reduction motor (7) passes through the outer wall of the shell (6) and is fixedly connected to adjacent rollers (12); The inner walls on both sides of the shell (6) are fixedly connected to a mounting seat (17), a reciprocating lifting assembly is installed inside the mounting seat (17), a mounting plate (18) is fixedly connected to the movable end of the reciprocating lifting assembly, and a plurality of staggered ejector pins (19) are fixedly connected to the bottom of the mounting plate (18); Two brackets (3) are symmetrically fixedly connected to the top of the frame (1), and a discharge chute (9) is commonly fixedly connected to the tops of the two brackets (3), and the discharge chute (9) is arranged through the shell (6).

2. A sand and stone screening anti-blocking device according to claim 1, characterized in that: The vibration assembly comprises four vibration screen springs (2), and the vibration screen springs (2) are symmetrically fixedly mounted on the top of the frame (1), and the four vibration screen springs (2) are all fixedly connected to the shell (6).

3. A sand and stone screening anti-blocking device according to claim 2, characterized in that: The vibration assembly further comprises a mounting frame (4), and the mounting frame (4) is fixedly mounted on one side of the outer surface of the frame (1); a driving motor (5) is fixedly mounted on the top of the mounting frame (4); a driving end of the driving motor (5) is fixedly connected to a rotating shaft (14), and the rotating shaft (14) passes through the outer wall of one side of the frame (1) and extends to the other side and is rotatably connected thereto; two first cams (13) are symmetrically fixedly sleeved on the outer surface of the rotating shaft (14), and the first cams (13) are in contact with the housing (6).

4. The sand and stone screening anti-blocking device according to claim 1 is characterized by: The reciprocating lifting assembly comprises a power motor (21), and the power motor (21) is fixedly mounted on one side of the outer surface of the mounting seat (17), a driving shaft of the power motor (21) passes through the outer wall of the mounting seat (17) and is fixedly connected to a second cam (20), a bottom of the second cam (20) is abutted against a movable bar (22), and the movable bar (22) is slidably connected to the mounting seat (17) and fixedly connected to the mounting plate (18), and a plurality of return springs (16) are fixedly connected between the movable bar (22) and the mounting seat (17).

5. The sand and stone screening anti-blocking device according to claim 1 is characterized by: Two material blocking bars (11) are arranged above the discharge chute (9), and the material blocking bars (11) are in close contact with the metal screen (8) and the roller (12).

6. The sand and stone screening anti-blocking device according to claim 1 is characterized by: A through hole (15) is provided on one side of the outer surface of the shell (6), and the through hole (15) matches the discharge chute (9).

7. The sand and stone screening anti-blocking device according to claim 1 is characterized by: The inner walls on both sides of the frame (1) are fixedly connected with a discharge trough (10).

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